Compound transmission system for compounding LAN and other commu

Details Compound transmission system for compounding LAN and other commu Compound transmission system for compounding LAN and other commu

1996-03-21

1999-04-20

Pham, Chi H.

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

370529, 34031007, 455 33, H04M 700

Patent

active

058963898

ABSTRACT:
A compound transmission system compounds signals from a LAN communication device and other communication devices without multiplex them. A first LAN communication device is connected to a second LAN communication device through two line pairs (10, 20). A first signal transmission device such as an exchanger (111) is connected to center taps of windings of transformers (50, 51) on the side of the line pairs to superpose a communication signal from the first signal transmission device on the LAN signal and separate a telephone communication signal from the LAN signal at the center taps. The transformers (50, 51) constitute a first superpose/separate circuit. A second signal transmission device such as an exchanger terminal (112) is connected to center taps of windings of transformers (60, 61) on the side of the line pairs to superpose a communication signal from the second signal transmission device on the LAN signal and separate the communication signal from the LAN signal at the center taps. The transformers (60, 61) constitute a second superpose/separate circuit.

REFERENCES:
patent: 4569045 (1986-02-01), Schieble et al.
patent: 5148144 (1992-09-01), Sutterlin et al.
Local and Metropolitan Area Networks--8029, published by the Institute of Electrical and Electronics Engineers, Inc., Dec. 30, 1994, pp. 29-58.

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